RiverFish

European eel · Anguilla anguilla

European eel in the Lee Navigation

Largest measured european eel: 101 cm

The largest european eel measured in Environment Agency surveys of the Lee Navigation was 101 cm, recorded at Enfield Lock on 13 August 2024.

Across 172 measured european eel, the median measured length was 59.9 cm.

Surveyors recorded weights for 2 european eel. The median was 9.9 oz (0.2795 kg) and the largest recorded weight was 1 lb 0.3 oz (0.462 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Lee Navigation.

See european eel records across England →

Most recent observation7 August 2025Enfield Lock · 7 fish
Largest measured european eel
101 cm
Median length
59.9 cm
Fish measured
172
Survey locations
15

Individual EA measurements

Largest measured european eel

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
101 cm13 Aug 2024Enfield Lock166572
100.5 cm23 Aug 2023Enfield Lock163015
100.2 cm13 Aug 2024Enfield Lock166572
99 cm23 Aug 2023Enfield Lock163015
98 cm7 Aug 2025Enfield Lock177751
96.6 cm13 Aug 2024Enfield Lock166572
91 cm7 Aug 2025Enfield Lock177751
90.5 cm23 Aug 2023Enfield Lock163015
89.5 cm23 Aug 2023Enfield Lock163015
88 cm23 Aug 2023Enfield Lock163015

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where european eel were found

Each point marks a survey location with at least one european eel record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding european eel
Enfield Lock22 Oct 20027 Aug 202511
Ponders End19 Jan 19935 Aug 202510
Picketts Lock16 Mar 199310 Jul 202514
Enfield Lock TowPath27 Sept 201827 Sept 20181
Ware Priory5 Nov 19927 Oct 20042
Amwell Magna24 Feb 199324 Feb 19931
Fieldes Weir to Dobbs Weir18 Feb 199318 Feb 19931
Crown Fishery (Dobb's Lock + Carthagena)5 Feb 19935 Feb 19931
Small Lee, Prince of Wales fields2 Feb 19932 Feb 19931
Turnford Marshes26 Jan 199326 Jan 19931
Rye House22 Jan 199322 Jan 19931
Waltham Abbey Marsh26 Nov 199226 Nov 19921
Coppermill Stream3 Nov 19923 Nov 19921
Amwell Quarry1 Oct 19921 Oct 19921
Tumbling Bay22 Sept 199222 Sept 19921

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1992–2025

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

Fish measured by surveyors

Measured length distribution

See how the 172 measured fish were spread across different length ranges.

Smallest
24.2 cm
Lower quarter
45.6 cm
Median
59.9 cm
Upper quarter
70 cm
Largest
101 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest
3.4 oz (0.097 kg)
Lower quarter
6.6 oz (0.1882 kg)
Median
9.9 oz (0.2795 kg)
Upper quarter
13.1 oz (0.3708 kg)
Heaviest
1 lb 0.3 oz (0.462 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Lee Navigation

Compare other species with enough survey and measurement data for a detailed page.

Roach Perch Pike Chub Bleak Tench

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →